Braiding machine



Patented July 12,' 1927K.

CARL TOBER, OF BERLIN-KARLSHORSVT, GERMANY.

BRAIDING MACHINE.

pplieation led December 2, 1926, Serial No. 152,179, and in Germany December 8, 1925.

rllhis invention relates to braiding machines with rows of bobbins rotating in opposite direction of which the inner bobbins are ycontinuously driven by a roller system.

I According to this invention, the rollers for driving the inner bobbins are provided circumferentially with one or more helical recesses, in which recesses the' threads passing from the outer row ofl bobbins lie during their passage through the roller system. rEhe threads therefore during such passage cannot pass between the nip of contacting rollers in the roller system whilst contact of the contacting rollers at the points-of the recesses is maintained owin to the oblique position of the recesses relatively to the axis of the rollers so that in spite of the recesses the rollers of the roller system may drive without shock or thrust.

Agfurther object of the invention is so to arrange the vdrive rollers for the inner bobbins land/or the slide rollers connected with the bobbin slides that' the rotational planes l of these rollers about their own axes are parallel or approximately so with their rotational planesfabout the braiding axis.

The advantage of this arrangement consists among others of avoiding a continuously varying position of the rotational plane of the roller' arrangement such as obtains in the roller system herebefore employed, i. e. avoiding expenditure of power to overcomega top like action of the rollers (see for example the arrangement described inthe German specilication No. 415,642). It is known that a top like action` (the quickly moving rollers of the roller system work as such) allows .a directly forward movement in its own rotational plane, but causes very considerable resistance when in its forward movement, the direction of its rotational plane is vvaried continuously to a large extent, as is ,the case in the known roller arrangements, where at each rotation of the braiding machine, the rotational 'plane of each rollerl is given a sudden turn of about 360 so that the rotational planes of the rollers thus are subjected to a continuous andvery quick alteration. y

The invention is illustrated in the accompanying figures in which Fi re 1 is a vertical section through abrai ing machine in which for greater clearness two inner bobbins only each with a drive roller are shown.

Figure 2 is a section on the line AB; Figure 3 shows a drive roller t'o a larger scale.

'Referring to Figure 1, 1 is a base plate carrying at its centre a bearing 17 on which rotates the hub of an outer bobbin carrier 7. 18 are outer bobbins cooperating'with outer thread guides consisting ofrollers 3` and a yswing lever (not illustrated). Roller 3 rolls in known manner upon a stationary cam track 8 which is secured upon arms 44 on the base plate 1. The carrier 7 vis also provided with a guide track 41 for a bobbin slide 37 and with a ring of teeth 33. The carrier 7, with the aforesaid parts, is given a circular movementabout the braiding axis, by means of the bevel wheel 34 secured roller and a slide thereto, and in mesh with abevel wheel 36 l i mounted upon a driving shaft 29. The slides 37 which carry the inner bobbins 20 and rotate upon the guide track 41 in\an opposite direction thereto are driven by a roller system in the following manner. The bevel wheel 36 is also in mesh withl a bevel wheel 42 which because it is in mesh with the opposite vdiametral point of the bevel Wheel 36, to that of the bevel wheel 34 is rotated in the opposite direction tothe said bevel wheel 34 lthe bevel wheel 42 being secured on the hollow shaft 25 which is rotatably mounted in the main bearing 17. The upper end of the shaft 25 is connected with a roller carrier 26, bosses 26a on which receive the axles 31 of drive rollers 30.

When the carrier 26 is rotated, drive rollers 30 act onfslide rollers 23 connected by their spindles 22 to the slides 37 so that .the slides 37 are moved in the'direction of the arrow (see Figure 2) around the braid- 23, these. rollers 30, 23 should be given, be-

sides their circular movement about the braiding axis, arotational movement about their own axes. This rotation of the rollers 30 is effected by securing to the spindles 31 of, the drive rollers 3Q-toothed wheels 32 in mesh with a ringo teeth 33 on carrier 7. The rotation thus imparted to the' drive rollers 30 about their own axes is transferred tothe slide rollers 23.

The direction of the drive of thewcarrier 7 vand therefore of the ring of teeth 3 3 is shown by the.Qdot-ted lines'in 'ggilre 2 as being in a clockwise direction. The toothed wheels 32 connected to the drive rollers 30 roll round the Yring of teeth 33 and rotate the drive rollers 30 in a clockwise direction as shown by the arrow about their own axes. rl`he plate 26, in whichlthe spindles 31 of the drive rollers 30 are mounted, rotates .however in the directionof the arrow i. e.

in the opposite direction to that of the car- .rier 7 whereby the rollers 30 are given, besides the rotation about their own axes, a movement of rotation about the braiding axis so that they'move the slide rollers 23 (which as before set out have a movement of rotation about their own axes imparted thereto by the rollers 30) thel slides 37, to which the spindles of the rollers 23 are connected, and the inner bobbins 20 carried thereby being also rotated around the braiding axis.

The necessary 'driving pressure between the rollers L30, 23, for effecting the rotation of the rollers 23 about their own axes is ob- A tained by virtue of the reaction therebetween owing to the force transmitted thereby from the plate 26 to the slides 37.

The drive rollers 30 are provided with helicalrecesses 200 in which the thread lies when it passes between the drive rollers 30 and the slide rollers 23. Thisrecess 200 is shown in the drive roller on the left in Figure 1 and in all driving rollers 30 in'Figure 2, and alsoin the drive roller 30 shown to a larger scale in Figure 3.

The path described by the outer threads relatively to the roller system is diagrammatically indicated in Figure 2 by the thread path o. The driving action between the drive and slide rollers 30, 23, i'sindicated by the arrows between the axes 31 and l2,2 of the drive and slide rollers. Each outer thread passes with a so-called 2 over 2 braid (see thread path o in Figure 2) first beneath the slide roller 23, then between the contactin recess 200 and then passes over the roller 30 and through an intermediate space a between the non-co-operating faces of the rollers after which it passes below the neighbouring slide roller and again passes into a recess 200 in the line'of contact of the drive roller 30 with its appertaining slide roller in order then to pass over the neighbouring two inner bobbins. Between non-co-operating drive and slide rollersran intermediate space z is provided. When themachine is not in operation it may, however', happen owing` to the momentum ofthe slides-that the rollers 23 move out of contact with those drive rollers with which they had been contacting and move into engagement with the adjacent drive roller. In order that a thread now passing between these rollers which are now contacting shall not be caught in the nip thereof the drive rollers 30 are provided with an additional helical recess 201 of opposite sense to that of 200 (Figure 3) the' recess 201 thereby corresponding to the inclined position of the thread when it passes on the opposite side of the roller 30 (see Figure l). Recess 201 also comes into use when the machine is r'unning backwards. f

'in ,each drive roller any other gear ratio may be employed, the only condition being that a recess shold be in a correct position for the outer thread to lie therein.I

It will be seen from Figure 3 that the line of contact o-d of rollers 30 and 23 is at an angle relatively to the recess 200, so that the rollers in spite of the recesses 200 (201) can always roll upon one another without any disturbance caused by thrust which might otherwise be ca'used by the recesses.

The rotational planes of the drive and` slide rollers in Figure 1 both lie in the samev plane as that in which the rollers rotate about the braiding axis.

What I claim is 1. In a braiding machine the combination with inner and outer rows of bobbins moving in circular paths but in opposite directions of a roller system for moving the innerA U 0 g bobbins comprising drive rollers rotatable rollers 23 and 30, during which 1t lies 1n the about their axes and about the braiding axis and rollers co-operating with said rollers- In Figure 1 another roller 162 is provided y the outer bobbins.

frame and a recess at the circumference of each drive roller situated at an angle other than a right angle to the axis thereof for receiving the threads from the outer bobbins.

In a braiding machine the combination with inner and outer rows of bobbins moving in circular paths but in opposite directions, of a roller system for moving the inner bobbins comprising drive rollers rotatable about their axes and about the braiding axis and rollers cooperating with said rollers and carried bythe/inner bobbin frame and a helical recess at'the circumference of each drive roller for receiving the threads fromy 4. In a braiding machine the combination with inner and outer rows of bobbins moving in circular paths but in opposite directions of a roller system for moving the inller bobbins comprising drive rollers rotatable about their axes and about the braiding axis the plane of rotation of said rollers about their own axes being parallel with their plane of rotation about the braiding axis and rollers cooperating with said rollers and carried by the inner bobbin frame and a recess at the circumference of each drive roller adapted to receive the threads from the outer bobbins.

5. In a braiding machine the combination with inner and outer rows of bobbins movtionsof a roller system for moving the inner bobbins comprising drive rollers rotatable about their axes and about the braiding axis the plane of rotation of said rollers about their own axes being parallel with their plane of rotation about the braidin axis and rollers cooperating with said ro lers and carried by the inner bobbin frame and a recess at the circumference of each drive roller situated at an angle other than a right angle to the axis thereof for receiving the threads from the outer bobbins.

6. Ina braiding machine the combination with inner and outer rows of bobbins moving in circular paths but in opposite directionscof a roller system for moving the inner bobbins comprising drive rollersl rotatable about their axes and about the braiding axis the pla-ne of rotation of said rollers about their own axes being vparallel with their plane of rotation about the braiding axis and rollers cooperating with said rollers and carried. by the inner bobbin frame and a helical recess at the circumference of each drive roller for receiving the threads from theouter bobbins.

7. In a braiding machine the combination with inner and outer rows of bobbins moving in circular paths but in opposite directions of a roller system for moving the inner 'bobbins comprising drive rollers rotatable about their axes and about the braiding axis and rollers co-operating with said'rollers and ing in circular paths but in opposite direc-' carried by the inner bobbin frame and a pair of recesses at the circumference of each drive roller and on opposite sides thereof adapted to receive theJl threads from the outer bobbins.

8. In a braiding machine the combination with inner and outer rows of bobbins moving in circular paths "but in opposite directions of a roller system for moving the inner bobbins comprising drive rollers rotatable about their axes and about the braiding axis and rollers co-operating with said rollers and carried by the inner bobbin frame and a pair of recesses each on opposite sides of the circumference of each drive roller at an angle other than a right angle'to the axis thereof for receiving the threads from the outer bobbins.

9. In a braiding Amachine the combination with inner and outer rows of bobbins moving in circular paths but in opposite directions of a roller system for moving the inner bobbins comprising drive rollers rotatable about their axes and about the braiding axis and rollers cooperating with said rollers and carried by the inner bobbin frame, and a pair of helical recesses at the circumference of each drive roller and thereof for receiving the threads from the outer bobbins. l

l0. In a braiding machine the combination with inner and outer rows of bobbins moving in circular paths but in opposite directions of a roller system formoving the inner bobbins comprising drive rollers rotatable about their axes and about the braiding axis the plane of rotation ofsaid rollers about their own axes being parallel with their plane ,of rotation about the braiding axis and rollers cooperating with said rollers and carried by the inner bobbin frame, and a pair of recesses at the circumference of 'each drive roller and at opposite sides thereof and adapted to receive the threads from the outer'bobbins.

11.V In a braiding machine the combinaon opposite sides tion with inner and outer Yrows of bobbins y moving in circular .paths but in opposite directions of a roller system for moving the inner bobbins comprising drive rollers rotatable about their axes and about the braiding axis' the plane of rotation ofsaid rollers about their own axesbeing parallel with their plane of rotation about the braiding axis and rollers cooperating with said rollers and Ycarried by the inner bobbin frame,` and a pair yof recesses at the circumference of each drive roller at opposite sides thereof and at an angle other than a right angle yto the axis of said drive roller and adapted to receive the threads from the outer bobbins, 12. In a braiding machine the combination with inner and outer rows of bobbins moving in circular paths but in opposite directions of a roller system for moving the able about their axes and about the braiding axis the plane of rotation pof said rollersc about their own axes beingparallel with their plane of 1-otation"`aboi1t the braiding axis and rollers cooperating with said rollers and carried by the inner bobbin frame, and

a pair of helical recesses at the circumference of each drive roller 'and at opposite sides thereof and adapted to receive the threads from the outer bobbins.

13. ln a braiding machine, the combination with inner and outer rows of bobbins moving in circular' paths but in opposite directions of a roller system for moving said inner bobbins comprising drive rollers rotatable about their own axes and about the braiding axis, and rollers cooperating i, with said drive rollers and carried by the inner bobbin frame, the planes of rotation of said drive rollers and the rollers cooperating therewith about their own axes being parallel with their planes of rotation about the braiding axis, and a recess in the circumference of each drive roller adapted to receive the threads from t-he outer bobbins.

14. ln a braiding machine, the combination with inner and outer rows of bobbins moving in circular paths but in opposite directions of a roller system for moving said inner bobbins comprising' drive rollers rotatable about their own axes and about the braiding axis, and rollers cooperating with said drive rollers and carried by the inner bobbin frame, the planes of rotation of said drive rollers and the rollers cooperating therewith about their own axesbeing parallel with the planes of rotation about the braiding axis, and a recess at the circumference of each drive roller at an angle other than a right angle to the axis thereof for receiving the threads from the outer bobbins.-l

15. lin a braiding machine, the combination with inner `and outer rows of bobbins moving' in circular paths but in lopposite directions of a roller system for moving said inner bobbins comprising drive rollers rotatable about their own axes and about the braiding axis and rollers cooperating with said Idrive rollers andcarried by the inner bobbin frame, the planes of rotation of said drive rollers and the rollers cooperating .therewith about their own axes being parallel Withtheir planes of rotation about the braiding axis, and ahelical recess at the cir-v cumference of each drive roller for receiving the threads from the outer bobbins.

l16. ln a braiding machine, the combination with inner and outerrows of bobbins moving in circular paths but in opposite directions of a roller system for moving said inner bobbins colnprising drive rollers rotatable about their own axes and about .the braiding axis, and rollers cooperating with said drive rollers and carried by the .inner bobbin frame, the planes of rotation of said drive rollers and the rollers cooperating therewith about theirown axes being parallel with their planes of rotation about the braiding axis', and a pair of recesses at the circumference of each drive roller and on opposite sides thereof adapted to receive the threads from the outer bobbins.

i7. ln a braiding machine, the combination with inner and outer rows of bobbins moving in circular paths but in opposite directions of a roller system for moving said inner bobbins comprising drive rollers rotatable about their own axes and about the braiding axis, and rollers cooperating with said drive rollers and-carried by theinner bobbin :t1-ame, the planes of rotation of Sald drive rollers and the rollers Cooperating therewith about their own axes being par-- allel with their planes of rotation about the braiding axis, and a pair of recesses each on the opposite sides'of the circumference of each drive roller at an angle other than a right angle'to the axis thereof for receiving the threads from the outer bobbins.

18. lin a braiding machine, the combinationwith inner-,and outer rows of bobbins moving in circular paths but in opposite' ln testimony that I claim the foregoing A l as my invention I haveA signed my name this 22nd day of November,`1926.

- CARL TOBER.

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